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CVE-2026-20160 is a critical vulnerability in Cisco Smart Software Manager On-Prem (SSM On-Prem) caused by the unintentional exposure of an internal service. The exposed service's API can be reached remotely, and an unauthenticated attacker can send a crafted request to that API to execute arbitrary commands on the underlying operating system of the SSM On-Prem host. Successful exploitation results in command execution with root-level privileges. Reported affected versions are SSM On-Prem releases 9-202502 through 9-202510; releases earlier than 9-202502 are reported as not affected. Cisco fixed the issue in version 9-202601.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
33 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unauthenticated remote code execution vulnerability affecting Cisco SSM On-Prem.
A critical remote command execution vulnerability in Cisco Smart Software Manager On-Prem caused by unintended exposure of an internal service, allowing an unauthenticated attacker to gain root-level privileges.
A critical remote code execution vulnerability in Cisco Smart Software Manager On-Prem caused by exposure of an internal service, allowing arbitrary command execution as root via crafted API requests.
A critical remote command execution vulnerability in Cisco SSM On-Prem that allows unauthenticated attackers to execute commands on the host operating system with root privileges via a crafted API request.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.